What is AV and DC exactly, and whats the difference???

Question

I see this all over and i dont know what it is.
I know they got to do with the power and the wiring and stuff
but i think this is one of those things i need to know for my cars audio.

Can someone please explain.

----CORRECTION!!!!!!----

I MEAN ""AC""

SORRY ABOUT THAT
THANKS LADY FOR THE CORRECTION
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Answer 1

i know you mean AC but if it was AV it would be the audio visual line in the car

Answer 2

don't listen to scoosh... he hit the tree, but not the target. AC (I assume that's what you meant) is alternating current. that means that it switches, in a wave motion, from positive to negative. DC is direct current, being only positive, in a straight line. There shouldn't be any AC current in your car's circuitry except in a part of the engine you shouldn't be playing with for car audio. The only exception is -- if there is an inverter/transformer, but probly not. The cigarette lighter puts out 12 volts of DC power. That is what the car's battery is, and that's what any factory stereo I know of runs on. AC current is more in your house. AC power can be changed to DC and vise-versa. However, I think you just need to remember that your car wiring is DC. 12 Volts. the "ground" (that's where everything sort of joins before heading back to the battery, completing the circuit) is positive. so, it should all be 12V DC +gnd... if there is anything different than that, you should check with a mechanic or installation expert. Hope this helped.

Answer 3

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Answer 4

AC on an oscilloscope looks like a sine wave.
DC on an oscilloscope looks like a straight line above the reference point.

AC is voltage swings positive to negative, repeating 60 times a second (in the U.S) in an analog motion.
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Answer 5

AV ??? you sure its not AC beacuse in physics it means:
AC = the current will flow backwards and forwards always changing direction.
DC = Direct current, the electricity will only flow in one way!!!

Sorry if its no use to you

Answer 6

AC is alternating current,kinda lika pulse type of thing,what you get in cars.
DC is direct current,normally found in trucks coz its direct and a heavier voltage.

Answer 7

It should be illegal for people who don't know WTF they are talking about to answer questions. The three above me each know just enough to get somebody hurt.